After spending the night in a supposedly haunted house, Bugs is deemed the "World's Bravest Person" and is signed to fight "Turk, the Terrible" in a boxing match. At the library, Porky finds a reference to the South Seas "Isle of Hercules" where the people have super-human strength. Bugs and Porky fly to the island, but find the natives are very secretive of the source of their strength.